Very high energy gamma-rays from the VELA pulsar

Details Very high energy gamma-rays from the VELA pulsar Very high energy gamma-rays from the VELA pulsar

May 1987

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=1987a%26a...178..242b&link_type=abstract

Astronomy and Astrophysics (ISSN 0004-6361), vol. 178, no. 1-2, May 1987, p. 242-246.

Astronomy and Astrophysics

Astrophysics

22

Cerenkov Radiation, Gamma Ray Spectra, Pulsars, Radiant Flux Density, Supernova Remnants, Energy Spectra, Spectrum Analysis

Scientific paper

PSR 0833-45 was observed by us on several occasions over a time span of 5 yr using the wellknown atmospheric Cerenkov technique. All the available observations with absolute phase information constitute 3 indpendent data-sets with slightly differing gamma ray energy thresholds in the range 5 to 10 TeV. These data-sets are separately analysed and the phasograms are derived using the pulsar elements derived from radio measurements. From the excesses observed at different gamma ray energy thresholds an integral energy spectrum of the TeV gamma rays from Vela is derived. The estimated slope of this power law energy spectrum is -(2.5±0.3).

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